perch eprch prech rpech erpch repch pecrh epcrh pcerh cperh ecprh ceprh prceh rpceh pcreh cpreh rcpeh crpeh ercph recph ecrph cerph rceph creph perhc eprhc prehc rpehc erphc rephc pehrc ephrc pherc hperc ehprc heprc prhec rphec phrec hprec rhpec hrpec erhpc rehpc ehrpc herpc rhepc hrepc pechr epchr pcehr cpehr ecphr cephr pehcr ephcr phecr hpecr ehpcr hepcr pcher cpher phcer hpcer chper hcper echpr cehpr ehcpr hecpr chepr hcepr prche rpche pcrhe cprhe rcphe crphe prhce rphce phrce hprce rhpce hrpce pchre cphre phcre hpcre chpre hcpre rchpe crhpe rhcpe hrcpe chrpe hcrpe erchp rechp ecrhp cerhp rcehp crehp erhcp rehcp ehrcp hercp rhecp hrecp echrp cehrp ehcrp hecrp cherp hcerp rchep crhep rhcep hrcep chrep hcrep
Note: these 'words' (valid or invalid) are all the permutations of the word perch. These words are obtained by scrambling the letters in perch.